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Modeling the particle breakage by using combined DEM and SBFEM


Luo, T and Ooi, ET and Chan, AHC and Fu, SJ, Modeling the particle breakage by using combined DEM and SBFEM, Proceedings of the 7th International Conference on Discrete Element Methods , 1-4 August 2016, Dalian, China, pp. 281-288. ISBN 9789811019258 (2017) [Conference Extract]

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DOI: doi:10.1007/978‐981‐10‐1926‐5_31


A novel computational method is developed in this study through the coupling of the discrete element method (DEM) and the scaled boundary finite element method (SBFEM).The objective of the developed technique is to model the particle breakage phenomenon in granular materials. This method models individual grains as single star-convex arbitrary sided polygons. The DEM is used to resolve the dynamics of each grain whereas the SBFEM is used to determine its corresponding stress state after a DEM analysis. The flexibility of both the SBFEM and DEM enable the grains to be formulated on arbitrary sided polygons so that the morphology of each grain to be replicated using only a single polygon. Grain breakage condition is determined if the stress state in a polygon satisfies a mechanically driven criterion e.g., the Hooke-Brown criterion is used. Once the breakage condition is detected, the resulting grain is split into two separate polygons. The resulting new polygons are directly model led by the DEM and SBFEM without any change to the formulation. The feasibility of the developed method is demonstrated by a numerical example.

Item Details

Item Type:Conference Extract
Keywords:discrete element method, scaled boundary finite element method, particle breakage, granular soils
Research Division:Engineering
Research Group:Civil engineering
Research Field:Civil geotechnical engineering
Objective Division:Construction
Objective Group:Construction design
Objective Field:Civil construction design
UTAS Author:Chan, AHC (Professor Andrew Chan)
ID Code:115309
Year Published:2017
Deposited By:Engineering
Deposited On:2017-03-15
Last Modified:2018-07-05

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